PLATO Science Preparation Management Letter of Intent Please fill in this letter of intent. Only people which submitted such a letter of intent can be listed in the official PLATO documents and are formal members of the PLATO Science Preparation Management (PSPM) consortium. Please mail this letter of intent to the PSPM office: Philipp Eigmüller (philipp.eigmueller@dlr.de) Deadline: 31st of March, 2011 If you have questions please contact the corresponding leader of the working package you are interested in: WP 10X XXX: PSPM Coordination WP 11X XXX: Exoplanet Science *WP 12X XXX: Stellar Science WP 13X XXX: Target/Field Characterization WP 14X XXX: Follow-Up Coordination WP 15X XXX: End-To-End Simulator *WP 16X XXX: Additional Science H. Rauer D. Pollacco M.J. Goupil G.Piotto S. Udry W. Zima W. Weiss (heike.rauer@dlr.de) (d.pollacco@qub.ac.uk) (mariejo.goupil@obspm.fr) (giampaolo.piotto@unipd.it) (stephane.udry@unige.ch) (zima@ster.kuleuven.be) (werner.weiss@univie.ac.at) Contact Information: First Name Last Name Institute/Department: Email: Phone: I intent to work on the Working Package (WP number): (The WP structure can be found at http://www.oact.inaf.it/plato/PPLC/PSPM/PSPM.html) Give a short description of the work you intent to do: Provide an estimate of the fraction of your time you hope to allocate to the work covered by the present letter of intent: Further Comments: * No need to reply for the work-packages 12X XXX and 16X XXX, if you have already responded to the corresponding Letters of Intent for Stellar Science Plan Management or for Additional Science. PSPM WP 100000 Title: PSPM Coordination Leader: H. Rauer Objectives: Overall coordination of PLATO Science Preparation activities. PSPM WP 101000 Title: PSPM Project Office Leader: R. Titz-Weider Objectives: Support coordination of the PSPM activities. PSPM WP 102000 Title: Education and Public Outreach (EPO) Office Coordination Leader: U. Koehler Objectives: 1. Preparation to obtain maximum visibility for PLATO and its scientific mission objectives 2. Providing organizational and presentational (web site) structures to serve properly media and educational requests PSPM WP 102100 Title: Web-page maintenance Leader: I. Pagano Objectives: Preparation to obtain maximum visibility for PLATO and its scientific mission objectives PSPM WP 102200 Title: Editorial office Leader: U. Koehler Objectives: Preparation to obtain maximum visibility for PLATO and its scientific mission objectives PSPM WP 102300 Title: Education & Public Outreach - Visualisation Material Leader: A. Norton & C. Haswell Objectives: To produce resources to engage with and educate the public about the science behind PLATO. PSPM WP 103000 Title: PSPM Coordination Team Leader: H. Rauer Objectives: Coordinate and review PSPM and PDC activities PSPM WP 111000 Title: Coordination of tools for lightcurve filtering Leader: N. Lanza Objectives: To coordinate work packages looking at noise sources (both astrophysical and instrumental) in the PLATO photometry. PSPM WP 111100 Title: Specification of tools for lightcurve filtering Leader: S. Aigrain Objectives: To review and understand the effect of stellar noise on the photometric signal. Critically review mitigation techniques currently developed and propose developments that can be optimized for PLATO data. PSPM WP 111200 Title: Specification of tools for detecting and filtering instrumental noise Leader: F. Faedi Objectives: To review and understand the effect of systematic noise arising in the PLATO instrument itself. Critically review mitigation techniques currently developed and propose developments that can be optimized for PLATO data. PSPM WP 112000 Title: Specification of transit detection tools Leader: J. Cabrera Objectives: Coordination of sub-work packages related to transit detection algorithms. PSPM WP 112100 Title: Transit detection tools Leader: J. Cabrera Objectives: Review the currently available transit detection algorithms and compare and contrast their abilities with different types of data. This should include a preliminary investigation of the complexities of transit detection for binary and multiple stars. PSPM WP 112200 Title: Detection of single transit events Leader: D. Pollacco Objectives: Review of the difficulties (and mitigation) in the detection of small and/or long period planets. PSPM WP 112300 Title: Detection of Exoplanet systems via reflected light Leader: I. Snellen Objectives: Detection of planets through orbital phase variations. Review of which types of systems will be detectable in this way in PLATO data. PSPM WP 112400 Title: Other Detection Methods Leader: R. Silvotti Objectives: To use PLATO photometry to detect planets by indirect means e.g. Transit Timing Variations. Extension of PLATO discovery space to potentially very small planets and to relatively unexplored types of stars. WP 112410 - TTV/TDVs - V. Nascimbeni WP 112420 - EB Timing - S. Dreizler & S. Shuh WP 112430 - Pulsation Timing - R. Silvotti WP 112440 - Other methods - R. Silvotti PSPM WP 112500 Title: Multi-body Systems Leader: S. Desidera Objectives: Review of planet occurrence in multi-body systems (either binary or multiple stars, or multiple planets). Potential effect on detectability in photometric and spectroscopic data. WP 112510 - Photometric detection of circumbinary planets - H. Deeg WP 112520 - Planets in trojan orbits - F. Marzari WP 112530 - Exomoons and binary planets - G. Szabo WP 112540 - Other multiple systems - S. Desidera PSPM WP 113000 Title: Specification of procedure to rank planet candidates Leader: M. Deleuil Objectives: Coordination of sub-work packages related to planet ranking procedures and algorithms. PSPM WP 113100 Title: Define procedure to rank planet candidates Leader: A. Collier Cameron Objectives: To review the scientific literature in this area, comparing and contrasting the different procedures used by different ground and space based projects. To produce a preliminary ranking procedure showing expected dependencies. PSPM WP 113200 Title: Specification for Space based false positive identification through Centroid Lightcurves Leader: M. Deleuil Objectives: To improve the quality of PLATO planet candidates by rejection of imposters as determined by their centroided positions and lightcurves PSPM WP 113300 Title: Astrophysical False Positives Leader: A. Collier Cameron Objectives: To identify the list of astrophysical phenomena that can minim a planetary transit. To produce a procedure to identify those objects effected. PSPM WP 114000 Title: Specification of Transit Fitting Tools Leader: M. Gillon Objectives: Coordination of sub-work packages related to transit fitting algorithms. PSPM WP 114100 Title: Specify transit curve modeling tools Leader: S. Csizmadia Objectives: Specify the tools used in transit modeling. PSPM WP 114200 Title: Specify tools for accurate orbital period determination Leader: M. Deleuil Objectives: Assessment of published period finding techniques and procedures for the generation of orbital ephemeris for single and multiple stars. PSPM WP 115000 Title: Development of PLATO Specific Science Leader: D. Pollacco Objectives: Development of exoplanet science topics that impact on the interpretation of PLATO data. PSPM WP 115100 Title: Spectroscopic noise sources and their impact on RV determination Leader: C. Watson Objectives: Understanding the effects that star spots, granulation etc has on the radial velocity determination especially for systems with low mass planets. Outline of mitigation procedures PSPM WP 115200 Title: Improved planetary system characterisation Leader: A. Sozzetti Objectives: Review of the potential of data from other sources (e.g. Gaia) that can be used alongside PLATO data to improve planetary system parameters. Assessment of expected improvements. PSPM WP 115300 Title: Planet-Star Interactions Leader: S. Mathis Objectives: Preliminary investigation into the observed and predicted effects induced on the stellar surface by the proximity of the planetary companion. Resultant effect on the light curve. PSPM WP 115400 Title: M-dwarfs as planet hosts Leader: P. Wheatley Objectives: Evaluation of the M-dwarf population to be observed by PLATO. Estimation of planetary frequency and their potential for follow up with instruments likely to be available in the next decade. PSPM WP 116000 Title: Development of PLATO Interpretation Specific Science Leader: H. Rauer Objectives: Development of exoplanet science topics that impact on the interpretation of PLATO data. PSPM WP 116100 Title: The Mass-Radius relationship for gas giants Leader: T. Guillot Objectives: Understand the expected impact of PLATO photometry on the mass vs radius relationship of gas giants and its implications for their structure. PSPM WP 116200 Title: The Mass-Radius relationship for terrestrial planets Leader: F. Sohl Objectives: Use of PLATO photometry and ground based spectroscopy to produce a mass vs radius plot for terrestrial planets and hence infer their internal structures. PSPM WP 116300 Title: Planetary formation and orbital evolution Leader: R. Nelson Objectives: Assessment of the importance of orbital evolution and migration to the likely PLATO planet population. PSPM WP 116400 Title: The environments of PLATO habitable zones planets Leader: H. Lammer Objectives: Evaluation of likely environmental conditions for habitable zone planets typical of those expected in the PLATO surveys. PSPM WP 116500 Title: Atmospheres of PLATO planets Leader: F. Selsis Objectives: Examination of current exoplanet model atmospheres especially for the expected population of terrestrial planets that PLATO will be sensitive to. Estimation of the likelihood of detection with other facilities such as the e-ELT or the JWST. PSPM WP 117000 Title: Specificatians for interface to other work packages and PDC Leader: N. Santos Objectives: To specify required data needed from other (primarily stellar) work packages and its method of retrieval and use. Assessment of required data accuracy to reach mission goals. PSPM WP 120000 Title: Stellar Science coordination Leader: M.J. Goupil Objectives: Coordination of the work packages WP121000 to WP127000. No need to reply for the following work-packages (12X XXX) if you have already responded to the Letter of Intent of the SSPM PSPM WP 121000 Title: Stellar modeling Leader: A. Weiss Objectives: adapted to low mass, main sequence stars. PSPM WP 121100 Title: 1D Stellar models Leader: Y. Lebreton Objectives: To provide grids of high quality 1D stellar models and an automated evolutionary code specifically adapted to low mass, main sequence stars PSPM WP 121110 Title: Very low mass stars Leader: S. Cassisi Objectives: To provide an extended and updated grid of state-of-the-art evolutionary models for stellar structures in the Very Low Mass Stars regime (M<0.5 solar mass) for any specified chemical composition. These models will be computed from the Pre-Main Sequence to the Main Sequence. PSPM WP 121120 Title: Low mass stellar models Leader: J. Montalban Objectives: Provide grids of high quality 1D stellar models for low mass, main sequence stars PSPM WP 121130 Title: Dedicated evolutionary code Leader: TBD Objectives: Provide grids of high quality 1D stellar models for low mass, main sequence stars PSPM WP 121200 Title: Transport processes Leader: S. Talon Objectives: To model several transport processes, beyond classical convective heat transport, that are known or expected to play an important role in determining stellar structure and influence stellar evolution. Formulations for transport of heat, chemical elements and angular momentum induced by motions such as convection, rotation, turbulence or waves will be improved or developed with the objective of implementation in a 1D stellar evolutionary code. PSPM WP 121300 Title: PMS evolution Leader: F. Palla Objectives: To build a computation tool that provides PMS stellar models with rotation profiles and initial conditions as realistic as possible. PSPM WP 121400 Title: 2D/3D Stellar evolution models Leader: M. Rieutord Objectives: The objective of the WP is to deliver very precise 2D stellar models. Indeed, the determination of the bulk parameter of a star (Age, Mass, etc.) from seismic data needs a very good preliminary model of the star. Such good models require at least two spatial dimensions to properly include the effects of rotation. We therefore propose to deliver models at the state-of-the-art level, which can be combined to the best oscillations codes out of which the most precise stellar parameters can be drawn. PSPM WP 121500 Title: Binarity Leader: S. Mathis Objectives: considered star has a stellar companion (star or a compact object). Second, as it will be the case in PLATO, the studied star hosts a planetary system with one or several planets. In each case, if the companion (stellar or planetary) is closed enough, the system evolution is modified by tidal interactions. First, a large-scale torque due to the equilibrium tide is exerted on the convective envelope of solar-type stars. Then, low-frequency stellar oscillations (inertial in convection zones and gravito-inertial in radiation zones) are excited by the tidal potential: this is the dynamical tide. Each type of tide induces a supplementary transport of angular momentum in stellar interiors, which couples with those treated in the single star case (meridional circulation, turbulence, magnetic field, and internal gravity waves excited by the convection). This of course modifies the studied star internal evolution and mixing. Furthermore, this also induces the evolution of the companion orbit (Keplerian elements) and angular momentum (synchronism, obliquity), which in turn leads to a new tidal potential that modifies once again the system evolution. The orbital and spin state of the system then gives strong constraints on the age of the system. The study of binarity will thus be very important both for close binary stars and for star-planets studies in PLATO. PSPM WP 122000 Title: Model atmosphere Leader: T. Morel Objectives: Define general objectives of WG and assess means to achieve them. Define tasks of the four working subgroups (3D NLTE model atmospheres and stellar chemical composition, determination of Te, L and BC, determination of limb darkening, atmospheres of M dwarfs). PSPM WP 122100 Title: 3D NLTE model atmospheres Leader: M. Asplund Objectives: Assess reliability of 1D LTE model atmospheres (e.g., temperature-optical depth relation) for FGK dwarfs and the impact that the neglect of granulation may have on the stellar parameters derived for the host stars. Derive chemical compositions of very and low mass stars. PSPM WP 122200 Title: HR diagram and chemical abundances Leader: C. Allende Prieto Objectives: Assess limitations and accuracy of current methods for the determination of Te and BC in FGK dwarfs. Based on the expectations for the GAIA data, estimate the accuracy on the radius of the stellar host that is presently achievable. Provide these quantities and their uncertainties as input to the others SPM WP. PSPM WP 122300 Title: Determination of limb-darkening Leader: A. Claret Objectives: to determine with precision the limb-darkening distribution of the host stars. Identify and quantify the sources of uncertainties in masses, radii and effective temperatures of the host stars. PSPM WP 122400 Title: Model atmospheres of M dwarfs Leader: I. Hubeny Objectives: M dwarfs are particularly suited to detect planets. It is therefore mandatory to understand properly the physics of the atmospheres of these cool stars and their relation to planetary transits and to provide high quality model atmospheres. PSPM WP 123000 Title: Stellar activity and rotation Leader: A.F. Lanza Objectives: a) To measure the level of stellar magnetic activity, the rotation period, and the latitudinal differential rotation. They will be input to modeling of stellar structure and evolution, stellar atmospheres, and hydromagnetic dynamo action; b) to predict magnetic field effects on stellar eigenfrequencies; c) to predict the radial velocity perturbations arising from magnetic perturbations of surface convection and photospheric brightness inhomogeneities this is of fundamental importance to confirm telluric planets and measure their mass. The measure of the rotation period, in combination with models of stellar angular momentum evolution, can be used to estimate the age of planet-hosting stars in the field through the methods of gyro-chronology. A knowledge of stellar rotation is fundamental also to study tidal effects in planetary systems with close-in planets. The level of stellar magnetic activity controls the photo-evaporation of the atmosphere of close-in planets and the space weather in planetary systems having late-type stars with winds coming from magnetically controlled coronae. PSPM WP 123100 Title: Spot models Leader: B. Mosser Objectives: To provide methods and algorithms for the measurement of spot distributions, in close relation with the stellar activity (WP123000) PSPM WP 123200 Title: Surface convection (1D & 3D) Leader: F. Kupka Objectives: This WG must provide information on the properties of surface activity of the host stars. In particular, it is dedicated to determine the properties of surface convection (granulation,) in function of the spectral type using both 3D numerical simulations and 1D models of convection. PSPM WP 123300 Title: Global angular momentum of evolution Leader: M. Pinsonneault Objectives: Testing of theoretical models of stellar angular momentum loss, internal angular momentum transport, and the associated mixing. There are two distinct applications: understanding of stellar physics and applications to stellar population studies. Examples of the former would include asteroseismic tests of dynamo models and distinguishing between magnetic, wave-driven, and hydrodynamic transport processes in stellar interiors. Examples of the latter would include exploring rotation as an age indicator for low mass stars and synthesizing connections between stellar activity (chromospheric and coronal), rotation, age, and mass for habitability studies. PSPM WP 123400 Title: Dynamos and differential rotation Leader: A.S. Brun Objectives: Most stars rotate and exhibit a large diversity of magnetic fields. It is believed that dynamo action, i.e the complex, nonlinear interplay between, convection, large scale flows (differential rotation and meridional circulation) and magnetic fields, is the source of the magnetism of solar like stars and M dwarfs, the main stellar targets of PLATO. Being able to constrain all these MHD processes is crucial to our understanding of stars and their impact on their environment. Seismic inversions of the extent of convective envelope, the surface and internal profiles of large scale flows and of proxies of the magnetic activity will help reaching this goal. PSPM WP 123500 Title: Stellar rotation from photometry Leader: S. Messina Objectives: To derive the stellar rotation period from the stellar flux rotational modulation. The latter is induced either by surface temperature inhomogeneities that are carried in and out of view by the stellar rotation or eclipses in close binary systems. Different algorithms (e.g., Fourier-based methods, phase dispersion minimization, amplitude of variance) will be used to analyze the photometric time series, to assign a quality flag to each inferred rotation period, and to estimate their confidence level. Possible rotation period variations related to surface differential rotation will be also investigated. PSPM WP 123600 Title: Rotation and planetary transits Leader: A. Silva-Valio Objectives: Modelling of starspots occulted by the planet during its transits and estimate of the rotation rate at the occulted latitude using starspots as tracers. In combination with the out-of-transit light curve modelling, this allows us to estimate stellar differential rotation. PSPM WP 124000 Title: Seismic diagnostics Leader: S. Basu Objectives: To deliver inverse and forward procedures to the PDC and associated validated numerical codes which are able to provide precise mass, age radius and other information on the host stars. PSPM WP 124100 Title: Forward approaches Leader: M. Cunha Objectives: To test and compare forward procedures that can deliver total mass, radius, age, and other information on the host stars. The adopted procedures will focus on low mass, main sequence stars from F to M spectral types. PSPM WP 124200 Title: Inversion methods Leader: M. Thompson Objectives: To develop inverse methods that can provide total mass, internal density profile and other information on the host stars, The adopted procedures will focus on low mass, main sequence stars from F to M spectral types. PSPM WP 125000 Title: Determination of stellar parameters Leader: J. Christensen-Dalsgaard Objectives: Coordinate the definition of the work in WP 125100, 125200, 125300 and 125400, such that it will result in the establishment of procedures to determine masses, radii, composition and other relevant properties with a precision required by the exoplanet WPs. Maintain close coordination with the activities under WP 121000 (Stellar models) to ensure that reliable modelling tools will be available for use in the analysis of the data. Maintain close coordination with WP122000 to ensure that optimal modelling tools will be available for use for determination of 'classical' parameters under WP125200. PSPM WP 125100 Title: Scaling laws Leader: A. Miglio Objectives: Provide procedures to compute mass, radius, and other relevant quantities from asteroseismic and non-asteroseismic data, through the application of scaling laws and other relevant relations between the observed quantities, in particular frequencies and power distribution, and the stellar properties. This must include procedures for full statistical analysis,allowing determination of error properties of the inferred quantities. PSPM WP 125200 Title: Incorporating classical parameters Leader: S. Feltzing Objectives: Prepare procedures to incorporate reliable information about classical stellar properties in the analysis to determine stellar parameters. These properties include effective temperature, luminosity, radius, composition from ground-based photometry and spectroscopy and, in particular, from the Gaia observations, expected to be available when PLATO is launched. The analysis must include use of optimal stellar atmosphere modelling for the interpretation of the observations. Procedures must be included for full statistical analysis, allowing determination of error properties of the inferred quantities. PSPM WP 125300 Title: Seismic Parameters Leader: C. Karo Objectives: Based on procedures from 125100 and 125200, combine the results in procedures to determine the desired properties of the stars (mass, radius, age, composition, ...) in an optimal fashion, including also a study of the benefit of including individual frequencies in the analysis. Procedures must be included for full statistical analysis, allowing determination of error properties of the inferred quantities. As a side benefit, information should be extracted which documents, in a statistically solid fashion, errors in the underlying stellar models, to be used in updating the modelling and hence reducing the systematic errors in the inferred stellar parameters. PSPM WP 125400 Title: Open Clusters Leader: S. Basu Objectives: Based on procedures from WP125100 and WP125200, and using input from WP125300, identify and develop the procedures that make use of the specific information provided from the fact that stars are members of open clusters. This includes specific requirements on the 'classical' information under WP125200. Procedures must be included for full statistical analysis, allowing determination of error properties of the inferred quantities. As a side benefit, information should be extracted which documents, in a statistically solid fashion, errors in the underlying stellar models, to be used in updating the modelling and hence reducing the systematic errors in the inferred stellar parameters, noting that internal consistency amongst cluster stars may be particularly relevant for this. PSPM WP 126000 Title: Mode Physics Leader: K. Belkacem Objectives: The mode physics WP126000 to WP126400 are designed to provide realistic determinations of mode amplitudes and linewidths, in relation with WP123000. The objectives are to provide realistic stellar lightcurves including oscillations as well as an estimation and modeling of sub-surface effects (e.g. turbulent pressure, granulation, magnetic effects) on mode parameters. These developments will benefi t from the CoRoT and KEPLER legacy. PSPM WP 126100 Title: Mode amplitude and surface effects on mode parameters Leader: R. Samadi Objectives: The first objective is to prepare and provide effcient tools that give us access to a realistic determination of mode amplitudes across the HR-diagram by using semi-analytical modeling as well as 3D hydrodynamic simulations. Using CoRoT and Kepler observations will test the results. The second objective is to investigate one specific contribution to what is commonly called surface e effects, e.g. the effect of turbulent pressure. PSPM WP 126200 Title: Mode line-width Leader: M.A. Dupret Objectives: This WP aims to improve the theoretical determination of mode line-width. A quantitative estimation of mode line-widths of solar-like stars across the HR diagram will be provided. It is an important objective since the line-width determines the mode detectability. PSPM WP 126300 Title: Relation Intensity-Velocity Leader: G. Houdek Objectives: Relation between mode Intensity and velocity: the CoRoT mission taught us that a correct modeling of mode amplitude and linewidth is not sufficient to reproduce the observations. Indeed, the ratio between mode intensity (luminosity) and velocity amplitudes is also needed. To progress on the knowledge of this ratio, dominated by non-adiabatic effects, ground-based spectroscopic as well as photometric observations are needed on the same targets. In addition, this work package aims to investigate the effect of adopting various stellar atmospheres on the superadiabatic outer stellar layers and consequently mode amplitude ratios. PSPM WP 126400 Title: Seismology of magnetic activity Leader: L. Gizon Objectives: The main objective is to characterize and parameterize the influence of magnetic field on mode parameters. PSPM WP 127000 Title: Interfaces Leader: F. Baudin Objectives: Interface between Stellar Science and other WPs, specifically PDC and Exoplanet WPs. PSPM WP 130000 Title: Target/Field characterization and selection Leader: G. Piotto Objectives: Coordinate all the WPs to deliver first PLATO field position, assessment of the PLATO target selection parameters and algorithms PSPM WP 131000 Title: Target characterization Leader: C. Moutou (10%) Objectives: Coordinate the WP 131100, 131200 and 131300 work PSPM WP 131100 Title: Gaia Catalogue Analysis Leader: A. Sozzetti Objectives: The objective of this WP is to coordinate the analysis of all available information (astrometric, photometric, and spectroscopic) from detailed simulations of Gaia observations, to provide realistic estimates of the degree of cleanliness with which it will be possible to populate the Plato Input Catalogue with a reservoir of well-classified nearby dwarf stars. PSPM WP 131110 Title: Astrometric Analysis Leader: M.G. Lattanzi Objectives: Use of the Gaia Data Processing and Analysis Consortium GOG (Gaia Object Generator) and AGISLab software interfaces for a robust assessment of the quality of Gaia astrometry at the level of early data release for the purpose of the definition of a PLATO Input Catalogue with a high degree of completeness (i.e., minimizing the contamination from distant giants), and for the optimization of the PLATO fields of view. PSPM WP 131120 Title: Photometric analysis Leader: S. Hodgkin Objectives: Understanding in detail how Gaia photometry can be used towards the optimal selection of targets in the PLATO fields (and how it can even help fine tuning the PLATO elds selection themselves). To this purpose, this WP will examine the outputs of the Data Processing and Analysis Consortium GOG (Gaia Object Generator) software interface. PSPM WP 131130 Title: Spectroscopic analysis Leader: A. Recio-Blanco Objectives: Understanding in detail how Gaia spectroscopy can be used towards the optimal selection of targets in the PLATO fields (and how it can even help fine tuning the PLATO fields selection themselves). To this purpose, this WP will examine the outputs of the Gaia/RVS Generalized Stellar Parametrizer-spectroscopy (GSP-spec) algorithm of the Gaia Data Processing and Analysis Consortium. PSPM WP 131200 Title: Other catalogue analysis Leader: R. Claudi Objectives: The objective of this WP is to coordinate the analysis of available photometric, astrometric and stellar activity catalogues to estimate the feasibility of the extraction of the five PLATO samples of targets and the M-dwarf targets, and the completeness and level of contamination of the extracted targets. Analysis of the catalogs for the selection of PLATO fields. PSPM WP 131210 Title: Analysis of photometric and astrometric catalogues Leader: V. Nascimbeni (20%) Objectives: Evaluate the feasibility of an all-sky classification of every possible candidate target for the Plato Stellar Samples 1, 2, 3, 5, using data from photometric and astrometric catalogues. Assess the completeness and the contamination fraction of such classification. Provide input for the WP 132100 in order to select the Plato long duration and step&stare fields. PSPM WP 131220 Title: M-dwarf selection Leader: L. Prisinzano Objectives: extract a subsample of M-dwarfs to be used for the Plato Stellar Sample 4 by using data from existent photometric catalogues and theoretical evolutionary stellar models. Provide the subsample of M-dwarfs to be used within the WP 131000 in order to select the Plato long-duration and step&stare fields. PSPM WP 131230 Title: Active stars Leader: I. Pagano Objectives: The final objective is the production of a catalogue of data useful to assess the activity level of the PLATO candidate targets. The objective of the present phase is a preparatory study to assess the content of the catalogue, the number of stars for which the required information is present in literature and the strategies to acquire new data if required. PSPM WP 131240 Title: Additional observations Leader: K.G. Strassmeier Objectives: We will determine whether new (photometric) observations of the PLATO field(s) are necessary for successful target characterization, in particular for targets fainter than V 11mag. If yes, a proposal shall be made how this could be achieved. PSPM WP 131250 Title: Characterisation from ongoing photometric surveys Leader: R. West Objectives: To assess the usefulness of on-going photometric surveys in delivering variability information to the input catalogue. PSPM WP 131300 Title: Spectroscopic characterization Leader: J.C. Bouret Objectives: Coordinate the preparation of the spectroscopic catalog, with the analysis of the various spectroscopic data. Define the parameters that might be used for the target selection and that will have to be implemented in the PDC data base. Define analysis tools PSPM WP 131310 Title: Spectra archive and spectroscopic catalog analysis Leader: M. Deleuil Objectives: Analyze the existing spectroscopic archives and the derived stellar atmospheric and fundamental parameters. Estimate the reliability of the data and the need for complementary analysis. Provide specifications for the final catalog to be implemented in the PDC. PSPM WP 131320 Title: RAVE Contribution Leader: U. Munari Objectives: Provide assistance in the definition of strategies leading to the selection of fields and targets during the PLATO implementation phase PSPM WP 131330 Title: Additional Spectroscopic Characterization Leader: T. Zwitter Objectives: The objective is to prepare for a high-intensity one year campaign with the UK Schmidt telescope at the Australian Astronomical Observatory. So the instrument could be used in 2012 for the PLATO input catalogue preparations. The objective is a spectroscopic verification of the PIC primary targets, upgrading the existing RAVE observations. PSPM WP 132000 Title: Field and Target selection Leader: R. Claudi Objectives: Coordinate all the WPs to deliver first PLATO field position, assessment of the PLATO target selection parameters and algorithms PSPM WP 132100 Title: Field selection Leader: G. Piotto Objectives: Deliver first PLATO field PSPM WP 132200 Title: Target Parameters Leader: C. Moutou Objectives: validate the parameters for target characterization PSPM WP 132300 Title: Scientific Target selection and characterization Leader: S. Ortolani Objectives: Study the best strategy to use output of WP131000 for the PLATO target selection PSPM WP 132400 Title: PIC scientific validation Leader: G. Piotto Objectives: Coordinate the PIC scientific validation activities. PSPM WP 133000 Title: Interface with other WP and Data Center Leader: S. Desidera Objectives: The objective of this WP is to coordinate the activities of the Interface WP PSPM WP 133100 Title: Interface with other Science WP Leader: S. Desidera Objectives: The objective of this WP is to coordinate the interfaces with the other science WPs PSPM WP 133200 Title: Interface with PDC Leader: P.M. Marrese Objectives: The interface team will coordinate the exchange of data, information, requirements and progress reports between the PIC Science team and the PDC (Plato Data Center). It will provide a method to formally document and track this exchange. The principal activity will be to coordinate and document the exchanges between the PIC Science team (G. Piotto, WP 130 000) and 1) the Input Catalogue team (IC, P. Giommi, WP 340 000) and 2) the Ancillary Database Content Management (AD, M. Deleuil, WP 350 000). The main activity will be an initial investigation of the interface tasks and design. PSPM WP 133300 Title: Interface GAIA-PLATO Leader: N. Walton Objectives: This WP will define the interfaces required by PLATO to Gaia and investigate options to be developed in the implementation phase to ensure these relevant science data interfaces. PSPM 140000 Title: Follow-Up Coordination Leader: S. Udry PSPM 141000 Title: Strategy and operation preparation Leader: D. Pollacco PSPM 141100 Title: Target repartition requirements Leader: PSPM 1412100 Title: Optimized RV-measurement requirements Leader: PSPM 141300 Title: Photometric and imaging follow-up requirements Leader: PSPM 142000 Title: RV follow-up Leader: F. Bouchy PSPM 142100 Title: RV computation tools Leader: D. Segransan PSPM 142200 Title: First Screening (>20m/s) Leader: E. Guenther PSPM 142300 Title: Moderate precision (5-10m/s) Leader: C. Moutou PSPM 142400 Title: High-precision RV measurements (1-3m/s) Leader: D. Queloz PSPM 142500 Title: Ultra-high RV precision on quiet stars (<1m/s) Leader: F. Pepe PSPM 142600 Title: Infrared RV measurements Leader: P. Figueira PSPM 143000 Title: Imaging and photometric follow-up Leader: I. Skillen PSPM 143100 Title: On/Off Photometry Leader: R. Alonso PSPM 143200 Title: Higher angular resolution imaging Leader: S Desidera PSPM 144000 Title: Spectroscopy Leader: A. Hatzes PSPM 144100 Title: Activity indicators and Doppler Information for active stars Leader: C. Lovis PSPM 144200 Title: Spectroscopy of early-type dwarfs Leader: PSPM 144300 Title: Infrared spectroscopy Leader: PSPM 145000 Title: Planet Characterization follow-up Leader: X. Bonfils PSPM 145100 Title: Transmission spectroscopy Leader: D. Ehrenreich PSPM 145200 Title: Secondary eclipse and phase functions Leader: R. Alonso PSPM 145300 Title: Techniques for atmosphere characterization Leader: X. Bonfils PSPM 145400 Title: rossiter-McLaughlin effects Leader: G. Hebrard PSPM 145500 Title: Long term follow-up and TTV Leader: PSPM 146000 Title: Interface to other WP and PDC Leader: S. Udry PSPM 146100 Title: Non-european participation Leader: D. Latham PSPM WP 150000 Title: End-to-End CCD Simulator Development Leader: W. Zima Objectives: Assess and verify various aspects of the updated PLATO Mission Design through realistic simulations of the expected observational data with the End-to-End CCD Simulator. PSPM WP 151100 Title: Modelling of space-based CCD photometry Leader: W. Zima PSPM WP 151200 Title: End-to-End Simulator Software Implementation Leader: W. Zima PSPM WP 152100 Title: Modelling of target intrinsic behaviour Leader: W. Zima PSPM WP 152200 Title: Modelling of target vicinity simulations Leader: W. Zima PSPM WP 160000 Title: Additional Science Leader: W.W. Weiss Objectives: The “Additional Science” work packages focus on nonstellar Targets observed by PLATO as well as on stars of spectral type F or hotter (excluding planet hosting stars and solar like pulsation), and on evolved stars of more than about 2 solar mass. No need to reply for the following work-packages if you have already responded to the circular distributed on January 27, AND if you have received an acknowledgement. PSPM WP 161 000 Title: Data preparation PSPM WP 161 100 Title: Merging light curves and homogenization PSPM WP 161 200 Title: Photometric calibration PSPM WP 162 000 Title: Global stellar characterization of stars addressed by Additional Science: PSPM WP 162 100 Title: Stellar Evolution PSPM WP 162 200 Title: Rotation PSPM WP 162 300 Title: Activity & Accretion PSPM WP 162 400 Title: Granulation PSPM WP 162 500 Title: Surface imaging & magnetic field PSPM WP 162 600 Title: Clusters & Stellar Associations PSPM WP 163 000 Title: Stellar Variability (excluding stars which (also) pulsate): PSPM WP 163 100 Title: EB PSPM WP 163 200 Title: Novae & Cataclysmic Binaries PSPM WP 163 300 Title: AGN PSPM WP 163 400 Title: Microlensing PSPM WP 164 000 Title: Stellar pulsation of stars addressed by Additional Science: PSPM WP 164 100 Title: PMS PSPM WP 164 200 Title: Beta Ceph PSPM WP 164 210 Title: SPB PSPM WP 164 300 Title: Delta Scuti PSPM WP 164 310 Title: roAp PSPM WP 164 320 Title: Gamma Doradus PSPM WP 164 330 Title: Hybrids PSPM WP 164 400 Title: Cepheids PSPM WP 164 500 Title: Red Giants PSPM WP 164 600 Title: RR Lyr PSPM WP 164 700 Title: AGB PSPM WP 164 800 Title: Compact pulsators PSPM WP 165 000 Title: Moving targets PSPM WP 165 100 Title: Asteroids PSPM WP 165 200 Title: Cometary nuclei PSPM WP 165 300 Title: Kuiper belt objects PSPM WP 166 000 Title: Ground based support